Most of my business travel was and is as a solo. No problem with that and I actually found it a bit annoying when I had to travel with another person or group of people. At times in my career I traveled a lot and often to places I'd been to numerous times. So much so that when I had people traveling with me they looked to me to be the expert on where to stay, where to eat, etc., not a role I particularly liked. Now as for "gripping fear" traveling alone when on vacation.....well seems like I've been married my whole life and generally I've found my wife not to look kindly at me going on vacation by myself. That "gripping fear"!